Would you go back to an amazing [man] knowing that you might have a harder break-up in the future?

Here’s the deal:
Last summer I started dating this amazing man. It was the best relationship I’ve ever had, and I care deeply about him. I left the town he lives in in December, but through January we still talked regularly and saw each other once.

However, I just moved to Europe for several months. It was clear that that was going to be the end of it, since I wasn’t planning on going back to his town (a summer tourist town good for working) ever again. We had a heartfelt goodbye, and I wrote him a long corny love note.

Now, I’m thinking about going back. If I do, there’s a 90% chance we’ll get back together, for at least another six months. As I see it, one of three things would happen:
1. I’d decide to move somewhere again, and we’d have a confusing and sad goodbye process strung out over a few months again.

2. I wouldn’t leave, and if we broke up it’d be because we didn’t want to be together anymore, which would be way harder.

3. Be together forever.

I’m not completely convinced that he’s my dream man. I’m only 23 so I don’t want to rush to that conclusion. He’s 37 (and a total sweetheart, nothing weird there!). If we don’t get back together ever, it will be a memory of a wonderful relationship, and we will probably stay in touch on friendly terms. If we do get back together but then break up because of non-geographic reasons, that will really suck.

Sorry there are so many details, has anyone been in what might be a similar situation? Hard to be both a gypsy and a romantic!

Thanks.